HBBT_HEG电源硬件测试.pptVIP

Presenter and Event * * * Home Energy Gateway Hardware BlackBox test Switching Mode Power Supplier 3.15A SMPS board – Load regulation -- HBBT 2.01 Measured HEG normal work condition, WiFi, LAN and one Zigbee are turned on, power board output watt is 2W. So 2W output is consider as normal condition. 3.5W is power board rating output, at 25C, 120V/60Hz input. Output voltage spec limit: LSL: 3.3V+ 1.45V = 4.75V, 1.45V is 3.3V regulator maximum voltage drop, its normal voltage drop is 1.2V. USL: 5.5V Efficiency @ 120V full load It is 69.2%, average Power board transient response Vce of Q1 (switch control transistor) shall 650V (datasheet spec limit is 700V). Vce 650V Reverse voltage of D1 shall not exceed 80% of its rating Vr_D10 0.8 * 60=48V 5V peak 6V for 1s, and 5.5V continuously. Undershot shall not lower than 4.5V. Vcc_peak 6V Vcc5.5V Transient response -- Output short circuit protection Test condition: 120V/60Hz input, output short Expectation: Shall no hardware failure Protected within 2s Result: Switcher turn on 28ms, then off 276ms, repeat every 304ms. Vce_Q1(Max) =180.8V 650V Vr_D10(Min) =14V 48V HBBT – 2.03 Ch2: 5V (Vcc) Ch3: Vr_D10 Ch4: Vce_Q1 All same as following pages if no additional comment Note: All within limit Worst case Switcher Q1 and output diode D10 voltage HBBT – 2.05/2.06 Test condition: 264V/60Hz input - Start up - Non-load - Full load Start-up Vce_Q1(Max) = 471.7V 650V Vr_D10=32.05V 48V Non-load Vce_Q1(Max) = 470V 650V Vr_D10=32.7V 48V 3.5W maximum output Vce_Q1(Max) = 473.3V 650V Vr_D10=32V 48V Result: Within limit DC bus cap maximum voltage Test condition: 264V/60Hz input - Start up - Non-load - Full load Expectation: Vc 400V Result: All within limit Start-up Vc_Max=361.6V 400V Non-load Vc_Max=362.2V 400V Non-load Vc_Max=361.5V 400V HBBT – 2.07 CH4: DC bus voltage Output capacitor ripple voltage HBBT – 2.08 Test condition: 85V/60Hz, 3.5W output 120V/60Hz, 3.5W output 132V/60Hz, 3.5W output 132V/3.5W: +5